Regal Ancestor Spirit

Trample
When Regal Ancestor Spirit enters the battlefield,
return all basic land cards from your graveyard to
your library and shuffle. If you have no basic lands
in your graveyard you may search your library for
2 basic lands of the same type and play them tapped.
Anytime a basic land is played you may search your
library for a basic land and play it tapped.

Whenever Regal Ancestor Spirit attacks, it gains
flying until end of turn.